| American Animal Health, Inc | | | environmental violation | 2007 | $7,280 |
| American Axle & Manufacturing Inc. | American Axle & Manufacturing | automotive parts | environmental violation | 2004 | $11,550 |
| American Biltrite, Inc. | American Biltrite | miscellaneous manufacturing | air pollution violation | 2012 | $70,000 |
| American Biodiesel, Inc. | | | water pollution violation | 2017 | $7,500 |
| AMERICAN BIOPHYSICS CORP | | | environmental violation | 2004 | $547,359 |
| AMERICAN BLUEGRASS MARBLE COMPANY | | | environmental violation | 2019 | $6,464 |
| AMERICAN BOA, INC. (SB) | | | environmental violation | 2008 | $27,532 |
| American Building Restoration Products, Inc. | | | environmental violation | 2004 | $23,980 |
| American Chemical Systems II, Inc. | | | pesticide violation | 2013 | $11,000 |
| AMERICAN CHEMICAL SYSTEMS II, LLC | | | environmental violation | 2013 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $11,000 |
| AMERICAN CLEAN ENERGY SYSTEMS, INC. MR. HILL | | | environmental violation | 2008 | $16,000 |
| American Coastal Energy, Inc. | | | water pollution violation | 2005 | $11,060 |
| American Cold Storage | | | environmental violation | 2009 | $36,269 |
| AMERICAN COLD STORAGE-NORTH AMERICA, L.P. (SB) | | | environmental violation | 2010 | $57,650 |
| AMERICAN COLD STORAGE-NORTH AMERICAN, L.P. (SB) | | | environmental violation | 2008 | $53,250 |
| American Commercial Lines | | | water pollution violation | 2016 | $805,440 |
| AMERICAN COMMERCIAL VEHICLES | | | hazardous waste violation | 2002 | $30,000 |
| AMERICAN COMPUTER DEVELOPMENT INCORPORATED(SB) | | | environmental violation | 2010 | $9,200 |
| American Cooling, Inc. | | | environmental violation | 2018 | $28,900 |
| American Cooling, Inc. SEMCO | | | water pollution violation | 2018 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $28,900 |
| American Covers, Inc., d/b/a Handstands | | | environmental violation | 2016 | $5,720 |
| AMERICAN CRAFT BREWERY, LLC | | | environmental violation | 2017 | $69,500 |
| American Craft Brewery, LLC | | | environmental violation | 2014 | $234,166 |
| AMERICAN CRYSTAL SUGAR COMPANY | American Crystal Sugar | agribusiness | air pollution violation | 2015 | $7,100 |
| AMERICAN DEVELOPMENT CORP. OF TENNESSEE, INC (SB) | | | environmental violation | 2012 | $31,637 |
| AMERICAN DISPOSAL, INC. | Waste Connections Inc. | waste management and environmental services | air pollution violation | 2000 | $34,448 |
| AMERICAN DRILLING SERVICES, INC. (SB) | | | environmental violation | 2013 | $5,130 |
| AMERICAN ECOLOGY RECYCLING CENTER, INC. | | | hazardous waste violation | 2000 | $100,000 |
| American Electric Power | American Electric Power | utilities and power generation | air pollution violation | 2007 | $4,675,000,000 |
| AMERICAN ELECTRIC POWER | American Electric Power | utilities and power generation | air pollution violation | 2007 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $750,000 |
| AMERICAN ELECTRIC POWER | American Electric Power | utilities and power generation | air pollution violation | 2020 | $8,025,000 |
| AMERICAN ELECTRIC POWER CO (NATIONAL CASE) | American Electric Power | utilities and power generation | air pollution violation | 2007 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $6,225,000 |
| AMERICAN ENERGY CORPORATION | American Consolidated Natural Resources Inc. | mining and minerals | air pollution violation | 2008 | $40,000 |
| American Energy Inc | | | water pollution violation | 2006 | $80,000 |
| AMERICAN ESOTERIC LABORATORIES | | | hazardous waste violation | 2014 | $31,435 |
| American Falls Solar LLC | | | water pollution violation | 2022 | $416,500 |
| American Falls Solar, LLC | | | water pollution violation | 2022 | $416,500 |
| American Felt & Filter Company, Inc. | | | environmental violation | 2004 | $28,771 |
| AMERICAN FIRE TECHNOLOGIES | | | air pollution violation | 2020 | $57,397 |
| AMERICAN FUJI SEAL INC | | | environmental violation | 2000 | $5,950 |
| AMERICAN FUJI SEAL, INC. | | | hazardous waste violation | 2021 | $149,000 |
| AMERICAN FURNITURE CO., INC | | | air pollution violation | 2004 | $163,583 |
| AMERICAN GILSONITE COMPANY | | | PCB violation | 2001 | $7,000 |
| American Gilsonite Company | | | water pollution violation | 2019 | $516,500 |
| American GreenFuels LLC | | | air pollution violation | 2017 | $192,000 |
| American Greenfuels, LLC | | | water pollution violation | 2023 | $9,623 |
| AMERICAN GREETINGS CORPORATION | Clayton Dubilier & Rice | private equity (including portfolio companies) | air pollution violation | 2006 | $8,485 |
| AMERICAN HARDWOOD INDUSTRIES, LLC | | | environmental violation | 2014 | $65,000 |
| AMERICAN HARDWOODS INDUSTRIES | | | water pollution violation | 2016 | $35,800 |
| AMERICAN HEALTH & SAFETY, INC. | | | environmental violation | 2001 | $8,800 |
| AMERICAN HERITAGE LAND DEVELOPMENT, LLC | | | water pollution violation | 2004 | $12,028 |
| AMERICAN HERITAGE PROPERTY MANAGEMENT, LLC | | | lead violation | 2018 | $16,450 |
| AMERICAN HOLLOW BARING, CO (SB) | | | environmental violation | 2011 | $18,250 |
| American Honda Motor Company, Inc. | Honda | motor vehicles | air pollution violation | 2007 | $210,000 |
| American Honda Motor Company, Inc. | Honda | motor vehicles | air pollution violation | 2013 | $580,000 |
| AMERICAN INFECTION CONTROL | | | environmental violation | 2014 | $7,500 |
| American International Chemical | | | environmental violation | 2016 | $307,020 |
| AMERICAN INTERNATIONAL INDUSTRIES | | | hazardous waste violation | 2001 | $18,150 |
| AMERICAN INTERNATIONAL REFINERY, INC. | | | hazardous waste violation | 2000 | $62,260 |
| AMERICAN INTERNATIONAL REFINING INC. | | | air pollution violation | 2000 | $46,000 |
| AMERICAN IRON & METAL CLEVELAND | | | air pollution violation | 2022 | $100,000 |
| AMERICAN IRON OXIDE COMPANY | | | air pollution violation | 2006 | $134,000 |
| AMERICAN IRON OXIDE(PVS) - MAGNETICS INTL | | | air pollution violation | 2019 | $50,000 |
| American Jetway Corporation | | | air pollution violation | 2004 | $7,275 |
| AMERICAN LABORATORIES, INCORPORATED | | | air pollution violation | 2009 | $440,000 |
| American Lifan Industry Inc. | Lifan Group | motor vehicles | air pollution violation | 2014 | $630,000 |
| American Lifan Industry, Inc. | Lifan Group | motor vehicles | air pollution violation | 2014 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $630,000 |
| American Lifan, Inc. | Lifan Group | motor vehicles | air pollution violation | 2018 | $13,000 |
| American Lock Co. (Crete) | | | environmental violation | 2006 | $19,086 |
| AMERICAN LOGISTICS SERVICES, LLC | | | environmental violation | 2020 | $41,272 |
| American Marine Corporation | | | water pollution violation | 2009 | $97,138 |
| AMERICAN MATSUSHITA ELECTRONICS CO. | | | environmental violation | 2000 | $5,000 |
| American Metal and Iron, Inc. | | | water pollution violation | 2009 | $45,000 |
| AMERICAN METALS RECOVERY CORP SUB OF K B F POLLUTION MANAGEMENT INC | | | hazardous waste violation | 2003 | $45,000 |
| AMERICAN MIDSTREAM (MISSISSIPPI), LLC | | | environmental violation | 2012 | $23,010 |
| AMERICAN MIDSTREAM (MISSISSIPPI), LLC) | | | environmental violation | 2011 | $17,300 |
| American Mold Guard Inc. | | | environmental violation | 2007 | $11,700 |
| American Municipal Power | American Municipal Power | utilities and power generation | air pollution violation | 2010 | $15,850,000 |
| AMERICAN NATIONAL CAN CO. | Ardagh Packaging Group | paper and packaging | environmental violation | 2000 | $5,000 |
| AMERICAN NATURAL GAS, INC. | | | drinking water violation | 2012 | $59,335 |
| AMERICAN NATURAL GAS, INC. | | | drinking water violation | 2016 | $10,500 |
| AMERICAN NATURAL PROCESSORS | | | water pollution violation | 2018 | $40,000 |
| American New Century, Inc. (Nelson Wang) (SB) | | | air pollution violation | 2005 | $6,300 |
| AMERICAN OVERSEAS MARINE CORPORATION | | | air pollution violation | 2004 | $30,000 |
| AMERICAN PACKAGING CORPORATION | | | hazardous waste violation | 2004 | $6,220 |
| American Packaging Corporation | | | hazardous waste violation | 2023 | $8,750 |
| American Peptide Company Inc. | | | hazardous waste violation | 2008 | $5,000 |
| American Performance Technologies, LLC (SB) | | | air pollution violation | 2010 | $9,200 |
| American Performance Technologies, LLC (SB) | | | air pollution violation | 2013 | $100,000 |
| American Plating Company of Texas LTD | | | hazardous waste violation | 2019 | $18,354 |
| AMERICAN PLATING COMPANY OF TEXAS, INC. | | | environmental violation | 2001 | $43,000 |
| AMERICAN PLATING SERVICE, INC. | | | hazardous waste violation | 2013 | $5,000 |
| AMERICAN PROGRESSIVE CIRCUITS, INC. | | | hazardous waste violation | 2004 | $22,247 |
| American Property Management Corporation | | | environmental violation | 2012 | $10,000 |
| AMERICAN RACING | | | environmental violation | 2000 | $5,000 |
| American Recovery, L.L.C. | | | hazardous waste violation | 2021 | $48,007 |
| AMERICAN RECYLING CENTER | | | air pollution violation | 2014 | $5,720 |
| AMERICAN REFINERY GROUP, INC. | | | air pollution violation | 2004 | $275,000 |
| American Refining Group, Inc | | | air pollution violation | 2021 | $220,000 |
| American Refining Group, Inc. | | | air pollution violation | 2019 | $4,850,000 |
| American Refining Group, Inc. | | | air pollution violation | 2021 | $220,000 |
